feat: add theme-based layouts

Each theme now has a unique layout:
- Light: Standard fixed sidebar
- Vibrant: Horizontal top navigation
- Corporate: Compact sidebar (expands on hover)
- Dark: Floating sidebar with glass effect

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/web/components/layouts/topnav.tsx

@@ -0,0 +1,118 @@
+'use client';
+
+import Link from 'next/link';
+import { usePathname } from 'next/navigation';
+import { cn } from '@/lib/utils';
+import {
+  LayoutDashboard,
+  FileText,
+  Calculator,
+  Settings,
+  LogOut,
+  BarChart3,
+  Calendar,
+  Bell,
+  Users,
+  ChevronDown,
+} from 'lucide-react';
+import { useAuthStore } from '@/stores/auth-store';
+import { logout } from '@/lib/api/auth';
+import { useRouter } from 'next/navigation';
+import { useState } from 'react';
+
+const navigation = [
+  { name: 'Dashboard', href: '/dashboard', icon: LayoutDashboard },
+  { name: 'CFDI', href: '/cfdi', icon: FileText },
+  { name: 'Impuestos', href: '/impuestos', icon: Calculator },
+  { name: 'Reportes', href: '/reportes', icon: BarChart3 },
+  { name: 'Calendario', href: '/calendario', icon: Calendar },
+  { name: 'Alertas', href: '/alertas', icon: Bell },
+  { name: 'Usuarios', href: '/usuarios', icon: Users },
+  { name: 'Config', href: '/configuracion', icon: Settings },
+];
+
+export function TopNav() {
+  const pathname = usePathname();
+  const router = useRouter();
+  const { user, logout: clearAuth } = useAuthStore();
+  const [userMenuOpen, setUserMenuOpen] = useState(false);
+
+  const handleLogout = async () => {
+    try {
+      await logout();
+    } catch {
+      // Ignore errors
+    } finally {
+      clearAuth();
+      router.push('/login');
+    }
+  };
+
+  return (
+    <header className="fixed top-0 left-0 right-0 z-40 h-16 border-b bg-card">
+      <div className="flex h-full items-center px-6">
+        {/* Logo */}
+        <Link href="/dashboard" className="flex items-center gap-2 mr-8">
+          <div className="h-8 w-8 rounded-lg bg-primary flex items-center justify-center">
+            <span className="text-primary-foreground font-bold text-lg">H</span>
+          </div>
+          <span className="font-bold text-xl">Horux360</span>
+        </Link>
+
+        {/* Navigation */}
+        <nav className="flex-1 flex items-center gap-1">
+          {navigation.map((item) => {
+            const isActive = pathname === item.href || pathname.startsWith(`${item.href}/`);
+            return (
+              <Link
+                key={item.name}
+                href={item.href}
+                className={cn(
+                  'flex items-center gap-2 rounded-lg px-3 py-2 text-sm font-medium transition-colors',
+                  isActive
+                    ? 'bg-primary text-primary-foreground'
+                    : 'text-muted-foreground hover:bg-accent hover:text-accent-foreground'
+                )}
+              >
+                <item.icon className="h-4 w-4" />
+                <span className="hidden lg:inline">{item.name}</span>
+              </Link>
+            );
+          })}
+        </nav>
+
+        {/* User Menu */}
+        <div className="relative">
+          <button
+            onClick={() => setUserMenuOpen(!userMenuOpen)}
+            className="flex items-center gap-2 rounded-lg px-3 py-2 text-sm font-medium hover:bg-accent transition-colors"
+          >
+            <div className="h-8 w-8 rounded-full bg-primary/10 flex items-center justify-center">
+              <span className="text-primary font-medium text-sm">
+                {user?.nombre?.charAt(0).toUpperCase()}
+              </span>
+            </div>
+            <span className="hidden md:inline">{user?.nombre}</span>
+            <ChevronDown className="h-4 w-4" />
+          </button>
+
+          {userMenuOpen && (
+            <div className="absolute right-0 top-full mt-2 w-48 rounded-lg border bg-card shadow-lg">
+              <div className="p-3 border-b">
+                <p className="text-sm font-medium">{user?.nombre}</p>
+                <p className="text-xs text-muted-foreground">{user?.email}</p>
+              </div>
+              <button
+                onClick={handleLogout}
+                className="flex w-full items-center gap-2 px-3 py-2 text-sm text-destructive hover:bg-destructive/10 transition-colors"
+              >
+                <LogOut className="h-4 w-4" />
+                Cerrar sesión
+              </button>
+            </div>
+          )}
+        </div>
+      </div>
+    </header>
+  );
+}